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最新的 Databricks Certification Databricks-Certified-Data-Engineer-Professional 免費考試真題:

1. The data architect has decided that once data has been ingested from external sources into the Databricks Lakehouse, table access controls will be leveraged to manage permissions for all production tables and views.
The following logic was executed to grant privileges for interactive queries on a production database to the core engineering group.
GRANT USAGE ON DATABASE prod TO eng;
GRANT SELECT ON DATABASE prod TO eng;
Assuming these are the only privileges that have been granted to the eng group and that these users are not workspace administrators, which statement describes their privileges?

A) Group members are able to query and modify all tables and views in the prod database, but cannot create new tables or views.
B) Group members are able to create, query, and modify all tables and views in the prod database, but cannot define custom functions.
C) Group members have full permissions on the prod database and can also assign permissions to other users or groups.
D) Group members are able to query all tables and views in the prod database, but cannot create or edit anything in the database.
E) Group members are able to list all tables in the prod database but are not able to see the results of any queries on those tables.

2. Which of the following is true of Delta Lake and the Lakehouse?

A) Views in the Lakehouse maintain a valid cache of the most recent versions of source tables at all times.
B) Z-order can only be applied to numeric values stored in Delta Lake tables
C) Because Parquet compresses data row by row. strings will only be compressed when a character is repeated multiple times.
D) Delta Lake automatically collects statistics on the first 32 columns of each table which are leveraged in data skipping based on query filters.
E) Primary and foreign key constraints can be leveraged to ensure duplicate values are never entered into a dimension table.

3. The business reporting tem requires that data for their dashboards be updated every hour. The total processing time for the pipeline that extracts transforms and load the data for their pipeline runs in 10 minutes.
Assuming normal operating conditions, which configuration will meet their service-level agreement requirements with the lowest cost?

A) Schedule a Structured Streaming job with a trigger interval of 60 minutes.
B) Schedule a job to execute the pipeline once hour on a new job cluster.
C) Schedule a jo to execute the pipeline once and hour on a dedicated interactive cluster.
D) Configure a job that executes every time new data lands in a given directory.

4. The data science team has requested assistance in accelerating queries on free form text from user reviews. The data is currently stored in Parquet with the below schema:
item_id INT, user_id INT, review_id INT, rating FLOAT, review STRING
The review column contains the full text of the review left by the user. Specifically, the data science team is looking to identify if any of 30 key words exist in this field.
A junior data engineer suggests converting this data to Delta Lake will improve query performance.
Which response to the junior data engineer s suggestion is correct?

A) Text data cannot be stored with Delta Lake.
B) Delta Lake statistics are only collected on the first 4 columns in a table.
C) ZORDER ON review will need to be run to see performance gains.
D) The Delta log creates a term matrix for free text fields to support selective filtering.
E) Delta Lake statistics are not optimized for free text fields with high cardinality.

5. The Databricks CLI is use to trigger a run of an existing job by passing the job_id parameter. The response that the job run request has been submitted successfully includes a filed run_id.
Get Latest & Actual Certified-Data-Engineer-Professional Exam's Question and Answers from Which statement describes what the number alongside this field represents?

A) The total number of jobs that have been run in the workspace.
B) The job_id and number of times the job has been are concatenated and returned.
C) The globally unique ID of the newly triggered run.
D) The number of times the job definition has been run in the workspace.
E) The job_id is returned in this field.

問題與答案：